No problem, we've got 1400 and 1881 to multiply
1400 × 1881 = 1881 × (1400)
+ 1881 × 0 that is equal 0
+ 1881 × 00 which equals 0
+ 1881 × 400 what gives us 752400
+ 1881 × 1000 that results in 1881000

= 2633400
